import React from 'react'
import { useNavigate } from 'react-router'

export default function Header() {
    const navigate = useNavigate()
    function back() {
        navigate(-1)
    }

    function forward() {
        navigate(1)
    }



  return (
    <div className='col-xs-offset-2 col-xs-8'>
      <div className='page-header'>
        <h2>React Router Demo</h2>
        <button onClick={back}>后退</button>
        <button onClick={forward}>前进</button>
      </div>
    </div>
  )
}